Telegraph printer



March 1942.

29m/@Will H. J. NICHOLS TELEGRAP-H PRINTER Filed Nov. 4, 1939 6 Sheets-Sheet l 128e -Y I 63 mmm: www 1m. um.

INVENTOR ff/@ff n. @ya Affi March 1o, 1942. H, J NICHQLS flm TELEGRAPH PRINTER Filed Nov. 4, 1939 6 Sheets-Sheet 2 FIG] FIG-6 ma.l 7

INVENTOR AT'TORNEY MCRB W42- H. J. NICHOLS TELEGRAPH PRINTER Filed Nov` 4, 1939 6 Sheets-Sheet 5 INVENTOR` ATTORNEY March 10, 1942. H. J. NICHOLS TELEGRAPH PRINTER Filed NOV. .4, 1939 6 Sheets-Sheet 4` March 1o, 1942. H. J. NICHOLS 2,275,641

TELEGRAPH PRINTER Filed Nov. 4, 1959 6 Sheets-Sheet 5 ,o Flazz v "9a 12001 Flc-$.28.

INVENTOR ATT'oRNEY H. J. NICHOLS TELEGRAPH PRINTER March 10, 1942.

e 'sheets-sheet e Filed NOV. 4, 1939 INVENTOR I Patented Mar. 10, 19412` UNITED sTATEs PATENT ori-lcs Animation November 4, 1939, serial No. snaar:

:n claims.

This invention relates to printing telegraphy and more particularly to receiving devices for printing telegraphy of the type wherein a message is recorded by characters formed upon a tape.

The inventiony embodies novel aggregate motion mechanism comprising an accumulator actuated by signal operatedmeans for controlling the position of printing mechanism, in combination with novel printing and shift mechanism controlled jointly by the aggregate motion mechanism and by signal controlled means.

More speciiically, the device embodying the invention is provided for the purpose of supplying a simple and compact receiver for printing telegraphy wherein the componentsor sections rof the signal are restrained in their effects to their sequential occurrences, wherein accumulation and restoration occur in the same sense of direc.

l tion thereby eliminating inertia effects and producing smoothness of operation, and wherein the accumulator mechanism cooperates in an extremely simple manner with signal controlled means to produce shifting by meansl including the printingV mechanism. y

Similar devices of the prior art -have been subject to inertia effects and disturbing vibration due to reversal of direction of movement of the accumulating mechanism after setting, have required movement in at least two different directions for combinations of movement of rotation and movement of translation to produce a storage effect controlled by the signals, have required drag or frictional effects to reset the accumulating mechanism, have required complicated shift` mechanism controlled by means separate from the printing mechanism or have required a complicated duplication of 'printing elements cooperating with the several sets of printing characters.

(c1. 11s-4o) for printing telegraphy comprising means rotating continuously during a cycle for controlling In view of the above conditions prevailing in the prior art, one of the objects of the present invention is to provide a novel receiver for printing telegraphy whereby the foregoing undesirthe printing element.

Still anotherobject is to provide a novel receiver for printing telegraphy comprising novel shifting means controlled by a printing element.

A further object is to provide a novel receiver for printing telegraphy comprising simple' means movable in one direction to produce simultaneous shifting, at an angle to said direction, thereby providing shifting mechanism of extreme simplicity.

Still another object is to provide anovel receiver for printing telegraphy wherein accumulator means, rotating always in the same direction to position certain printingmeans, cooperate with rotating means controiling operation of means conjointly acting withV said printing means.

A further object is to vprovide a novelreceiver for printing telegraphy wherein selection of the character to be printed and printing thereof are smoothly combined with elimination of disturbing and retarding eiects. l

Other objects of the invention will be pointed out in the following description and claims and illustrated in the accompanying drawings, which disclose, by way of example, the principle of the invention and the best mode, which has been contemplated, of applying that principle.

In the drawings:

Fig. 1 is a plan View illustrating one embodi` ment of the invention.

Fig. 2 is a front end elevation of the device as illustrated in Fig. l.

Fig. 3 is a detail side view of one of the frictional driving mechanisms of the device in Fig. 1.

Fig. 4 is an end view of the friction element of the mechanism as illustrated in Fig. 3f

Fig. 5 is a plan view, generally similar to Fig. l, with certain parts omitted and others illustrated, to more clearly illustrate the operation of the device.

Fig. 6 is a fragmentary end elevation illustrating the operative elements of the selecting, resetting and accumulating mechanisms.

Fig. 7 is a detail view illustrating the storage tumbler selecting element of Fig. 6.

Fig. 8 is a fragmentary end elevation illustrating the control mechanism for the start-stop shaft of Fig. l.. I

Fig. 9is a fragmentary end elevation illustrating the operative elements of the driving and control mechanism for the printing wheel and accumulator.

Fig. is a fragmentary end elevation illustrating the operative elements' of the driving and control mechanism for resetting the accumulator mechanism and printing wheel.

Fig. 1,1 is a side elevation illustrating the accumulator mechanism and the drive and control elements for the same.

.disk elements of the accumulator device.

v Fig. 14 is a detail end view illustrating the manner of mounting one of the control pawls of the accumulator upon the respective disks thereof.

Fig. 15 is a detail end view illustrating the pawl element of Fig. 14.

Fig. 16 is a side elevation of the element ofy Fig. 15. i

Fig. 17 is a detail end view illustrating the construction of the fingered spring disk of the accumulator as shown in Fig. 12.

Fig. 18 is a side elevation of the element of Fig. 17.

Fig. 19 is a view, partly diagrammatic, illustrating the method of operation of the accumulating mechanism.

Fig. 20 is an end elevation ofthe device of of Fig. 1, with parts omitted, illustrating the tape feed and printing mechanisms.

Fig. 21 is a detail end view of the printing and shift control mechanism.

Fig. 22 is a sectional plan view including the mounting of the mechanism as illustrated in Fig. 21.

Fig. 23 is a detail the construction of the printing hammer or platen element.

Fig. 24 is a plan viewof the printing wheel.

Fig. 25 is an end elevation of the printing wheel.

Fig. 26 is a detail perspective view of the printing wheel shaft 'slot and pin means for mounting and controlling the shift mechanism.

Fig. 27 isla detail perspective viewillustrating the construction and assembly of the shift actuating mechanism. Fig.' 28 is a detail end view of the ring shaped spring element of Fig. 27.

Fig. 29 is a detail perspective view of the casing of the shift mechanism.

Fig. 30 is adiagram illustrating graphicallyl larlyto Figs. 1, 2 and `5. the receiver is mounted upon a base 48 carrying plates 4| and 42 in which are journaled thel ends ofthe shafts supporting the several rotary elements.

A motor 43 (Figq) 'is provided with a main power shaft 44 carrying a pinion 45 meshing 'with gear 45, provided with a hub 41. Gear 48 is fastened to a shaft 48 by a set screw `49 passing through the hub 41. Shaft 48 has attached thereto the driving element of the start-stop clutchl 50, which may comprise any type of eccentric, positive action clutch. A start-stop shaft 5|. joumaledat one end' by shaft 48 and at the other end by plate 4I is attached inany desired mannerto the driven element 58a (Fig. 8) of the thereof andof the start-stop shaft in amanner Mounted on the start-stop shaft 5I for rotation therewith and extending sequentially from the driven end to the front end thereof area 'trip lever or #t5-disk control cam 58 (Fig. 1)

ve sequence cams 54, 55, 55, 51,- and 58 for sequentially operating the storage tumblers 'in accordance with the received signals, a tumbler reset cam 59, the #8-disk control cam 58, a tape feed control cam 8l', and the print hammer trip crank 62 (Figs. 5 and 20). When stop .pin 52 (Fig.4 8) is held by its cooperating elements (see later) the driven cam element 50a is disengaged from the driving element of cam 50 in a manner well known -in the operation of such eccentric clutches, and the shaft 5I remains stationary 4 while motor 43 continuesV to rotate shaft'48 and the driving element of start-stop clutch 50. f When pin 52 is released, Vthe driving and driven clutch elements ol.' clutch 50 engage each other and the start-stop clutch rotates one complete revolution, whereupon pin 452 is again engaged by its cooperating element in the normal course of operation.

Meshing with gear 45 is a gear 83 havingA a hub 66 attached by screw ato auxiliary shaft B5 journaled atene end in plate 42 and at the front end in the plate 4i. YAttached to the 'auicr iliary shaft 55 by pins 55a (Fig. 3) are the driving elements 86a of a clutch arrangement comprising a floating gear 61. (Fig. 1). Driving elements 66a abut, respectively, friction rings `perspective view illustrating 66h' attached to the gear 51 on opposite sides thereof, whereby the gear 61 may be driven when not restrained from rotation and whereby said on auxiliary shaft 85 adjacent thefront end of said Shaft. 40

Meshing with floating gear 81 is a -gear 69 (Figs. 1, l11, and 12) mounted loosely by sleeve 59a on the printing or typewheel shaft v1l), journaled at one end in plate 42 and at the front en d in plate 4l. Sleeve 59a is attached to the #5-disk of the accumulator H for rotation of and control of said disk as will be described in detail later. A pin 89h attached to gear 59 is cont-rolled by cooperating stop l'means as will he described in detail later.

Meshing with oating gear 68 is a gear .12

(Figs. 1, 11, and 12'), carrying a pin 12b controlled by cooperating stop means as will be dethereof as will be described later.

To enable the setting, printing and restoring cycles to be completed during a time interval corresponding approximately to one revolution of start-stop clutch 58. A stop pin 52 is mounted on the driven element 50a to control the rotation the start-stop shaft, the typewheel and the restoring #6-disk are` run at slightly more than twice the speed of the start-stop shaft. By means of the auxiliary shaft 55 and by the proper choice of the gear ratios, the shaft 55 isdriven at desired speed to produce the necessary speed of rotation of the setting disk, typewheel and resetting disk. Y

Referring to Fig. 6, an electromagnet 18, operated by the line signals, has an armature 11 mounted for oscillation on pivoted axle 18 and is biased by spring means 18 to the o or deenergized position. A pair of elongated cylindrical members 18a fastened to axle 18Ucarry at their ends, the flutter vane or interposer 84.1-

, As will be seen by reference --to Fig. 8,' the interposer 80 is held in abutting relation toa start-stop trip lever 8|, mounted for movement of oscillation in a vertical plane in the back comb 82 and for movement of translation with respect thereof. A front comb il provides lateral guides for the trip lever to maintain the oscillatory movement in a vertical plane. When the magnet 16 is energized, the vane or inter- 'l poser Il is held as illustrated in Fig. 8 with the hooked end 8|a of the trip lever abutting the edge of the vane. lug 8|b on the trip lever is in engagement with the stop pin 52 on the driven member 50al of the start-stop clutch- 5l. Upon reception of a start signal, magnet is deenergized, the spring 18 snaps the vane 8l away from the hooked end IIa of lever 8l, the-lever 8| is cammed downwardly; as viewed in'Flg. 8, by the action of pin 52 on' lug 8|b, permitting the pin 52 to pass the lug 8| b, and the start-stop shaft 5| is started on its one complete rotation. As soon as the stop pin 5,2 has passed the lug 8|b, the trip lever is restored to its operative stop position by means of the spring 8|c. Y

Referring to liigs 6 and '1, the ve sequence cams 54, 55, 56, 51, and 58`are arranged, in a helical series axially and circumferentially of the start-stop shaft 5| and are rotatable therewith into operative position with live corresponding signal storage tumblers 54a, 55a, 58a, 51a, and 58a (Fig. 5) respectively.

Novel means are now provided comprising the storage tumblers themselves, whereby the signals received by the magnet 16 are sequentially effective and whereby no succeeding signal can be effective until the preceding signal has been completely stored. The storage tumblers are mounted in the back comb 82 and the front comb 83 for oscillation in a vertical planeand movement of translation in the direction of the tumblers themselves. Each tumbler is provided With'a heel step 84 normally abutting the back guide comb and a sloping lug 85 cooperating with the respective sequence cam on the startstop shaft. When magnet 16 is deenergized, vane 80 is held away from the position shown in Fig. 6 and upon rotation of the start-stop shaft, the lugs 85 cooperate'with the respective sequence cam whereby the tumblers are oscillated about the heel step 84 as a pivot. Upon such oscillation, the hooked end 86 of the respective tumbler, slides behind the interposer 80, thereby blocking the same from operation until the cooperating cam on the start-stop shaft has ridden past, even if the following signal has already begun and has produced its eifect on magnet 16. Sufficient time for the storage of each respective signal segment and operation of the respective cooperating cam is there- In this position, the slopingu engages the end of vane 80 and the tumbler is oscillated, about tlievane 80 as a pivot, until a heel step 81 on thetumbler is moved into alinement with the opening 8l in the back comb. The 5 tumbler is thereupon jerked backwardly by a spring I8 until heel step 81 engages the 4back comb, as shown in Fig. 6, andthe end 90 of the tumbler engages the wedge shaped end of a tripping pawl generally designated as T in Fig. 6 to trip the pawl and control the setting of an accumulator disk, so that the selected storage tumblerreleases its respective accumulator disk. It is to be noted that even if a sequential signal attempts to operate the magnet 18, the armature is held .by the sequence cam 4acting on the lug 85 holdlngthe hooked end 88 tightly against the vane 8| Vand thereby holding the amature in place until the respective cam has cleared the tumbler lug. -Only the centers of the succeeding signals will therefore be effective and the signal sections will each be properly sequentially storedV without interference by the succeedingsignal section,.and ina simple and direct' manner,

A lug 9| provided on each tumbler which cooperates with a reset vane 82 carried by pivoted axleV 93 ;osci1lated by arm S4 which is biased counterclockwise by a. spring 55 connected at one endt'o the arm 94 and at the other end to an ear portionV 95of the back comb. Arm 94 carries at the end thereof a follower roller 91 -cooperating with the tumbler reset cam 59 on the start-stop shaft 5|. At the proper time in thegcycle ofrotation of shaft 5|, cam 59 engages follower 91, to actuate arm 94 which oscillates axle 93 to move the reset vane 92 against the lugs 9| of each of the tumblers which has been selected, to return the same to normal position with the heel step 84 thereof abutting the back guide comb 82.

Referring to Fig. 9, there is illustrated therein the trip means cooperating with the #l-disk control cam 6|! on start-stop shaft 5| for controlling the rotation of the combined printing wheel and shift mechanism' and the rotation of the novel accumulator means. Floating gear 68 in the same manner as floating gear 61 is constantly urged to rotate by the friction rings 66h (Fig.'3) as outlined above with respect to gear 61 and meshes with gear 12 mounted von and fastened to the printing or typewheel shaft 10. Pin 12b is provided on gear 12 cooperating with a lugBS on one arm 99 of a bell-crank lever |00 to hold the gear 12 in stop position against the torque.exerted by gear 68. The other arm 99a is biased clockwise by spring |0| and carries at its end a cam, follower a ccoperatingwith #tdisk control cam 60 of the start-stop shaft 5|. When the rise of cam 5|) engages follower 66a, the timing of which will be described later, the bell-crank |00 is rotated counterclockwise against the force of spring itil, the lug- S8 releases pin 12b and the gear .12 is rotated by the floating gear 58 which is constantly urged into rotation as set forth above. As gear 12 rotates, it rotates the combined printing wheel and shift mechanism 15 (Fig. 1) in accordance with the setting of the novel accumulator means 1|. If no disk on the accumulator means has been released, a

couple is exerted on shaft 10 but its rotation is prevented until one of the accumulator disks is released as will now be described.

Referring to Figs. 1l to 19 inclusive, the novel accumulator or translator means 1| comprises the lve disks designated as #|disk. #2-disk,

- with the total accumulation.

#t3-disk, #4-disk, and #l5-disk, respectively. The disks are assembled on shaft 10,as illustrated in Figs. 11 and 12, with five tripping pawls #|u, #211, #3a, #411, and #5a. respectively, mounted on the shaft 10, as seen in Fig. 14, and

' located between the respective disks. Each pawl,

as will be seen from Figs. 15 and 16, comprises a wedge shaped tripping portion T at one end cooperating with the extension, 90 (Fig. 6) of the respective storage tumblers whereby the pawl is tripped or is moved to the right, as viewed in Figs. 11 and 12, against the spring force exerted by a ngered spring disk |02, mounted on the shaft 10 as seen in Fig. 12, with fingers l02a tending slot, the extentof each ofthe respective slots 'varying with the particular disk. The #i-y disk is provided with a slot Si extending 90 about its circumference and is therefore capable of rotating 8 type wheel units, the #2-disk has a slot S2 extending 45 and therefore can rotate 4 type wheel units, the #Ii-disk has a slot S3 extending 180 and therefore can be rotated 16 type wheel units, the #ll-disk has' a slot S6 extending 221,/2" and therefore can be rotated 2 type wheel units and the #S-disk has a slot S5 extending 11% and therefore can rotate: but 1 unit. By combining the numerical number of units" of the respective disks, any number from l to 3l, inclusive, can be produced. If no signals are received, the type 'wheel will remain in zero position even'though the start-stop shaft is vrelleased, since no accumulator disk has been released. The typewheel will remain in its zero position until after the print period of the cycle whereupon the #i5-disc is released to while the figures shift function is represented by the signal combination 1, 2, 4, 5. As will be described in'detail later, the designation of the #3-disk as the 16 unit disk is essential when utilizing the Baudot code.

As is seen in Figs. 12 and 22, vthe combined typewheel and shift mechanism is attached to -the #I-disk by means of shaft 10, sleeve 13 and pin 14. The #I-disk accumulates all the angles of the tripped disks of higher number and therefore the typewheel will be rotated in accordance The #ii-disk remains stationary during accumulation and is then set in rotation in the same direction as same direction of rotation, back to the zero I position. v

Referring to the partly diagrammatic illustration in Fig. 19, the description of ,the operation of the novel accumulator will be greatly,

simplified. In Fig. 19, it is assumed that the diameters of the respective accumulator {disks have been progressively expanded beginning at the typewheel end. The typewheel 'I5 is designated as TW and clockwise rotation is assumed, as indicated by the arrow. The ends T oi pawls #I a to #5a, inclusive, are indicated in their un oprated or untripped position wherein they. are

resiiently positioned, in a notch N of the corresponding disk and partly within a fitting notch F. N. in the successive disk, to thereby lock the disks against rotation.

Upon actuation of the tumbler 58a (Fig. 5) corresponding to the pawl #|a, the upper end T of pawl #|a, as viewed in Fig. 19, will be moved upwardly (to the right as viewed in Fig. 11) until the said upper end is located entirely 1n the fitting notch F. N. in the #Z-disk. The #I-disk is thereupon releasedand is prepared for rotation by the float gear $8 (Fig. 9) rotating the gear 12 (when 12 is released by operation of bell-crank 100) which gear 12 thereupon rotates the #I-disk ,by means of its sleeve 13 (Fig. 12) to produce rotation of the #I-disk, clockwise, as viewed in Fig. 19. -The #l-disk will therefore rotate past the end S of the #la pawl until the Jil) end of the 90 slot SI in the #i-disk abuts end S of pawl #la whereupon rotation is stopped. Upon release of the #i2-disk by tripping of pawl #2a by its corresponding tumbler 51a, they upper end of pawl #2a will be moved upwardly as viewed in Fig. 19 into the fitting notch F. N. ofthe #3-disk and the #Z-disk is therefore free to rotate 45"'. Such rotation is produced by a further rotation of #I-disk which through end S of #la pawl drives #4t2-disk. When the #Ii-disk is released upon tripping of pawl #3a by tumbler 56a, it is rotated 180 by means of #l-disk and #2- disk; when the #4-disk is released upon tripping of pawl #4a by tumbler 55a it is rotated 221/2 and when the #S-disk is released upon tripping of pawl #5a by tumbler 54a it is rotated 111/4". This angular rotation is completely accumulated by the #l-disk which rotates the #2-disk, whileY in turn rotates the #1i-disk, etc. When all. the pawls #il a to #511, inclusive, have #ri-disk been tripped and the respective disks have been rotated, the #I-disk and the typewheel will have rotated a total of 348% or 31 units of the typewheel, or in other Words, the typewheel will have cumulator, or in other words, assuming the recep- 'the #-disk, to restore the accumulator to zero and to permit rotation of the typewheel in the.

rotated to the 1etters" shift position, as will be explained later.

,IL for example, the #3a pawl, only, had not been tripped; the #l-disk through its rotation with the released vdisks would rotate only 15 units since rotation of the #I-disk is prevented for 16 units when the #1i-disk is not released. This condition is represented in the Baudot code by l, 2, 4, 5. This rotation of the typewheel would bring it to the "iigures shift position, as will be explained later.

If we assume as before that the #I-disk is released but if it be further assumed that the #2- disk, the #3f-disk, the #4-disk and the #S-disk are not released because storage tumblers 51a, 56a, 55a, and 54a, respectively, are not actuated to abut andtrip the respective pawls of the action of the Baudot code signal l, the typewheel would be rotated 8 units and the letter E would be presented on the typewheel at theprint point. It has been assumed that the #6- disk is held stationary while the accumulation is taking place.

- After all of the p'awls have been selectively tripped or left unactuated in accordance with 'the signal code received, the #6-disk is released for rotation vin the same direction as the typewheel and the selectively tripped disks whereby the typewheel is returned to its zero position and the accumulator is reset to zero.V

Referring to Fig. 10, the floatinggear wheel 61 isv constantly urged counterclockwise, as shown, by the friction disk means 66h as seen in Fig. 3. Gear wheel 61 is held in mesh with gear 69 carrying the lock pin 69h (see also Fig. 11). Pin-69h is engaged by a lug |03 on the end of arm. |04 of the bell-crank lever |05 which is constantly urged in a clockwisel direction by spring |06 attached to arm |01 at one end thereof and to a fixed point |08 at the other end thereof. The free end of arm |01 carries a cam-follower roller 53a cooperating with the #i-disk control cam 53 on the start-stop shaft 6 I. i

After each of the tumblers has been selectively set by the sequence cams 54, 55, 56, 51, and 58 cooperating with the tumblers 54a, 55a, 68a, 51a, and 50a, respectively, and .with the vane 80 of lustrated in Fig. 19 and the #Ii-disk having rotated 360, pin 69h (Fig. 10) engages lug |03 and the rotation of the t6-disk is stopped and the accumulator has been reset for another accumulation to be run up thereon. l

Referring to Figs, 20 to 25, inclusive, there is illustrated therein, the novel mechanism as described and claimed in applicants copending application Serial No.v367,715, filed November 29, 1940, for effecting printing in conjunction with the typewheel, which Wheel is disclosed in detail in Figs. 24'and 25. The typewheel 15a is provided with two circumferential bands of type charac'- the electromagnet 16, and after each of the pawls #Ia, #2a, #31:, #411, and #5a has been selectively tripped and the respective disks released and after the #I-disk has been rotated an angllf lar amount equal to the sum of the circumferential angular extents of the slots of the selectively released disks, the rise of cam 53 engages follower roller 53a (Fig. 10) and rotates bell crank |05 counterclockwise against the force of spring |06, so that lug |03 releases pin 69h and gear 69 is thereupon started in rotation by thefloating gear wheel 61. Such rotation of gear 69 ro'v tates the sleeve 69a (Fig. l12) tothereby rotate o the #Ii-disk in the same direction as that in which the #I-disk and the selectively released disks were previously rotated. Upon such rotation of the #t6-disk, the remaining disks are allowed to rotate and the typewheel will continue its rotation until it has completed 360 of rotation. If, as indicated above, the typewheel has already been rotated 348% by the release of all of the accumulator control disks, or 31 units in all, the typewheel will now rotate 111A more deters, placed side by side axially of the wheel, there being 3| angular printing positions, in addition to the zero position. Five of these positions relate to printing functions, in which positions, the perimeter of thev typewheel is cut back to form a recess R so that upon operation of the printing hammer |04 (Fig. 20) the hammer will not strike the typewheel.

` Printing hammer |04 (Fig. 21) comprises a bellcrank having one arm |04a thereof longer than the other printing arm |04b thereof. Arm |04a is provided with an elongated slot |05 into which is inserted the headed member |06 carried by cylindrical member I06a (Fig. 22) fastened to plate 4|. Member |06 serves as a pivot about which the grees, or an additional unit, as the #G-disk is ro- Y tated and the typewheel will then be stopped in its zero position by engagement of the stop 12b on gear 12 with the lug 90 on bell-crank |00 (Fig. 9) which stop and lug permit one complete revolution only of-the typewheel shaft.

printing hammer or platen is oscillated. A generally semi-circular opening |01, is provided adjacent the free end of the arm |04a. A headed pin 62 (Figs. 5 and 21) forming the trip crank for the printing arm projects through opening f |01 and is eccentrically fastened to the tape feed cam 6 I. A right angle bracket |08 is fastened to plate 4| by a screw |09 and carries at the upwardly extending end thereof a wedge shaped latch I |0 cooperating with a notch III on arm I04a, to hold the printing arm locked in cocked position, as shown in Fig. 21. A compression spring |'I2 is fastened to the latch ||0 atone end thereof and surrounds an extension ||3 on the arm |041), which spring when compressed, as illustrated in Fig. 21, urges the bell-crank in a clockwise direction, which bell-crank, however, 'is held in position by latch I|0 cooperating with notch III. A platen or hammer head ||4a extends to the left of arm I'04b as viewed in Fig. 23, the platen being Referring again to Fig. 19, lit is seen that as the #t6-disk is rotated, it takes up the slack between the stop ends S of the pawls and the left hand end of the arcuate slots in each disk. Since the wedgel end T of pawl #5a was previously moved entirely into the fitting notch F. N. of the #G-disk and since -the #S-disk was at that time rotated, the

notch N in the #t5-disk, into which end T of pawl #6a normally' fits, is notalined with the T end ofthe #5a pawl. Rotationof the #t6-disk, thereupon rotates pawl #5a clockwise bodily so that the stop end S thereof is removed from abutment with the right hand end of the circumferential slot S5, as viewed in Fig. 19, and. is moved clock 6J wise away therefrom until-it engages the left hand end of said slot, whereupon the end T of pawl #5a will be alined with the notch N, in the #B-disk and will enter the notch under the stress of spring disk |02 Y l sequently, the #i-disk and the #t6-disk will rotate together Vuntil the slack is takenv u p in the #4-disk and this same process isrepeated with respect `to each of the lowered numbered disks. Eventually all the disks assume the position as iland engage the #t5-disk. Conalined with the `proper band of type characters by the shift mechanism, as will be described later. A shifting lug ||4b extends to the right or upwardly as viewed in Fig. 22) and provides means for producing shifting, upon actuation of the hammer at one of the shift positions of the typewheel, as will be described later.

As seenin Fig. 2l, the printing'hammer is cocked and held clear of the typewheel. The start-stop shaft is rotating clockwise as indicated by the arrow and has of Vrotation remaining to complete one revolution thereof., The trip crank 62 is so positioned that it is about to lift the' printhammer 'clear of the latch IIO. When the hammer |04 is so released from latch |I0, the f compression spring I I2 drives the print hammer |04 towards the typewheel and the platen ||4a forces the tape (Fig. 20) against the selected type character, thereby producing printing of the' selected character-upon the tape. The crank pin continues to raise the arm I04a, which thereby removes platen I'I4a from the type character and permits return of the typewheel to zero as de; scribed above. The crank pin, upon the beginning of the next cycle of rotation of the startstop shaft, pulls the arm |04a tothe right during the first 90 of rotation thereby dropping the notch |H back of the latch H0, the hammer remaining cocked in this position during the next 180 of rotation, at the end of which time the crank and hammer are as illustrated in Fig. 21.

Referring to Figs. 21 to 29 inclusive, novel means, as described and claimed in applicants copending application Serial No. 367,714, led November 29, 1940 are illustrated therein for axially Shifting the combined typewheel and shift mechanism to aline the desiredband of type with the printing hammer lug H4b. A radially sldable tongue member l l5 having arms I |5a and I |5b and an elongated opening H6 extending diagonally thereof, is provided with a resilient split ring H1 having one side thereof inserted into an elongated opening H8 in arm ||5a of the tongue. The free ends H9 and H9a of said spring abut one of two pairs of cooperating top and bottom depressions each comprising a top depression |20 and a bottom depression |a directly beneath, the depressions of each pair being formed in the top and bottom of arm H5b respectively,

A hollow circular hub |2| (Fig. 29) is provided with slots |2Ia, |2|b, into which the arms ||5a and H5b`, respectively, are inserted. A circumferentially extending groove ||1 is formed in the interior of hub |2| to receive the resilient ring H1. Openings |22, |22a are'formed in the circumference of the hub |2| and threaded-openings |23a and |23b and a shaft opening |23c are formed in the end wall |23 thereof for purposes which will be defined later.

A slot |24 is formed in the end of shaft 10 (Fig. 26) and an opening |25 is provided in said shaft A to receive a pin |26 therein.

Screw holes |21a and |21b and a shaft opening |21c (Fig. 25) are provided in the typewheel 15a which openingsare so located as to aline with openings |2311, |2312 and |23c, respectively, of the hub |2|.

Hub |2| is mounted upon shaft 10 and the slidable tongue H5 is insertedinto slot |24 in shaft 10 withthe ends ||5a and H51) located in the slots |2|a and |2| b, respectively, of hub |2|. The spring H1, mounted on tongue H5, internesting in the circumferential groove ||1a in the hub. Pin |26 is inserted through one of the openings |22, |22a and driven through the diagonal slot HB and into opening |25 in shaft 10 to thereby operatively assemble the hub, tongue. ring and shaft together. Typewheel 15a. is attached to the y hub by 'screws |21,passing, respectively, through thel openings |21a, |211) alined, respectively, with the threaded openings |23a, |231).

' The typewheel is indexed to the figures position or the letters position by the Baudot code signals 1, 2, 4, 5 and 1, 2, 3, 4, 5, respectively. Since the translator or accumulator mechanism 1| permits the typewheel to rotate 16 units or 180 in response to signal 3 of the Baudot code, it is seen that the figures and letters positions are 180 apart or in other words, are diametrically opposite. Upon receipt of the letters shift signa1 at the receiver, the accumulator 1| permits the typewheel to rotate until it assumes the letters position.` The typewheel is presumed to be in such a position that the printing platen H4a is alined with the figures band of characters on the" typewheel. After the rotation of the typewheel to the letters position and upon actuation of the printing hammer, the platen H4a enters a blank space on the typewheel and the lug H417 abuts the edge of arm ||5b thereby moving the slidable tongue H5 to the left, as viewed in Figs. 22 and 2'1, the sides of thereof.

the slot H6 riding on the pin |26 thereby simultaneously shifting the tongue H5 and the combination printing and shifting "mechanism 15, axially upward, as viewed in Fig. 22, until the pin |26 abuts the bottom right hand end of slot H6, whereupon the letters band of characters is alned with the platen H4a.

When a figures shift signal is received sequentially to the above, the end ||5a of tongue H5 will .be rotated into alinement with the lug i |41; and the combined printing and shifting mechanism 15 willbe moved axially downward,

as viewed in Fig. 22, to aline the figures band of characters with the platen H4a.

Referring to Figs. 1, 2 and 20, there is illustrated therein novel meansfor feeding the tape from the idler feed spool, across the printing face of` typewheel 15a and across the receiver mechanism t`o the tape rewind spool. Means are also provided for separately taking up the carbon after the respective carbon and paper tapes of the duplex tape have together passed 4between the printing elements.

A roll of duplex tape |28 comprising the paper tape |28a (Fig. 1) and carbon tape |281 (Fig. 20) is wound upon an idler spool |20 mounted by hubs er sleeves |29a for rotation on a rewind shaft |30 journaled in plates 4| and 32. A grooved pulley 3| is fastened to shaft |30-for rotation thereof, well known snap .fastening means being provided between the pulley |3| and the shaft |30 whereby the pulley'can be easily detached to allow removal of idler spool |29. A grooved pulley |32 is mounted on and connected to a shaft |33 upon which are also sequentially mounted, in back of pulley |32, a grooved pulley |34` and a feed ratchet wheel |35, both attached to the shaft. A well known Vtype of spring tension belt |35 is connected between pulleys |3| and |32 whereby the pulley |3| is rotated upon rotation of pulley |32 on shaft |33. A grooved pulley |31 is mounted on shaft |38 carrying a carbon takev up spool |39. A flexible belt |36a connects pulleys |34 and |31 -whereby shaft |38 is rotated upon rotation of shaft |33 by the ratchet wheel |35 as will now be described.

Referring to Fig. 20, a pawl |35a is pivotally mounted on the end |40a of an elongated follower lever |40 pivoted at |4|. The end |4017 of the follower lever abuts the tape feed cam- 5| and is resiliently held in contact therewith by means of spring |3517 attached to pawl |35a at one end and to the plate 4| at the other end As the start-stop shaft 5| (Fig. 5) rotates thereby rotating the tape feed cam 6|, cam 3| carrying the trip crank 62 rotates to release the print hammer as above described and upon continuing the rotation thereof aat side behind a succeeding tooth on ratchet wheel |35.

As cam 6| continues its rotation, the flat side 6|a thereof is removed from contact with lever end |40b and the full circumference of the cam engages |4012 whereby lever |40 is rotated clockwise to move the ratchet pawl |35a to the left to thereby advance ratchet wheel |35 one tooth. Rotation of wheel |35 rotates-shaft |33 and pulleys |32 and |34 (Fig. 2) thereby rotating pulleys |29 and |31, respectively, to rotate the rewind shaft |30 and the carbon take up spool |30. The far side of rewind shaft |30 has removably attached thereto a tape rewind wheel |42 (Fig. 1).

The duplex tape is fed from idler spool |29,

.haarige-i1 surface lub (Fig. 1) to therewlnd spool |42V where the message is stored. The carbon tape' illb. however, is fed upwardly from thetypewheel (Fig. 20) to the carbon take up spool |39 at the same time that the record tape Illa is being fed across the receiver to the rewind spoolthe 'pawls A#21:, #31:,"#411 and' #5a, respectively, as indicated in Fig. '30. While `pawl #2a is tripped as indicated in Fig. 30. since-we have |42 as above described.' The sizes of the respec tive pulleys are so chosen that the rewind and take-up spools always tend to wind up the paper. tape and carbon tape faster than the duplex tape is fed for printing.

The operation of the device and. particularly the sequential relationship of the operation of the various elements'will be more clearly understood when described in connection with the tim- .ing diagram of Fig. 30. The angular amounts of rotation of the respective velements are all referred to the rotation of the start-stop shaft and since the typewheel and accumulator disks revolve more rapidly than the start-stop shaft as explained above, the extent of their angular motion is illustrated in terms of rotation of the start-stop shaft. Upon receipt of the start element or section of the signal, which in the present instance, is deemed to be a deenergized condition of the line or an off vcondition represented by "start in Fig. 30, electromagnet 'i6 (Fig. 6) is deenergzed, armature 18a (Fig. 8) is released, the start-stop trip lever 8l releases pin 52 and the start-stop shaft 5i begins to rotate, the timed relation being as illustrated in Fig. 30. Upon receipt of the iirst signal element or section which will be assumed tobe a condition of energization of the line or an "on" condition, as represented by Ia in Fig. 30, the storage tumbler 58a, represented by Ic in Fig. 30 and controlling the #l -disk of accumulator ll, will be held by armature 18a in position to be Voperated by sequence cam 58, represented by IB in Fig. 30, toforce lug 90 (Fig. 6) of tumbler 58a against wedge element T of pawl #la to trip the pawl which when gear l2 is released, will release the #l-disk for 90 of rotation thereby permitting a 90 rotation of the typewheel, represented in terms of rotation of the start-stop shaft by ID of Fig. 30. Upon tripping of the #la pawl, as is seen from Fig. 3o, the l:1i-disk does not rotateand the typewheel shalt is not immediately released for rotation, since control cam 6D, called the #i disk control cam, on the start-stop shaft (Fig. 9) does not operate bellcrank |09 through camfollower 69a to release stop 98 from engagement with stop pin 12b, until later, the release being timed to occur after the restoring cycle is completed whereupon floating gear 68 drives gear l2 to rotate the typewheel shaft and the typewheel under the control of the released #i-disk as described above. The operation of the #l disk control cam 6l is timed to release the #i disk as indicated in Fig. 30. If all of the signal elements from l to 5 inclusive are on signals, the storage tumblers 57a, 56a,

55a, and 54a representedin Fig. 30 by IIe, IIIc,

IVc, Vc, respectively, will be actuated at the Vcenter of signal elements IIA, IIIA, IVA, VA,

respectively 'by their respective sequence cams 51, 56, 55 and 54 represented in Fig. 30 as IIB, IIIB, IVB and VB, respectively, to thereby trip liu assumed that pawl #la was also tripped, and.

since the #Z-disk is not driven by the #I-disk, until the #I disk has rotated 90 (Fig. 19)V the #Z-disk will not start its rotation until the rotation of #l disk is completed as illustrated in Fig.

30. The #3 disk will begin its rotation, however. i

as soon as pawl #3a is tripped, as indicated in Fig. 30, since the #t2-disk has completed -its rotation, before pawl #3a is tripped. Y Pawl #Ia, however, is tripped before the disk has completed its rotation' and therefore the #I disk will not begin its rotation until .the #3 `disk has fully completed its 180 rotation as illustrated in Fig. 30. Upon tripping of pawl #5(1, the '#5 disk will immediately begin its rotation since the rotation of the #4 disk is completed'a short time before pawl #5a is tripped, which tripping occurs-at the center of signal element .or section VA as illustrated in Fig. 30. After the #5.-disk has been released and the typewheel shaft rotatedy the 111A pertaning to this disk, the shaft is momentarily stopped by the stop end S of pawl #5a engaging the end of the circumferential slot S5 in the #Fa-disk.

Shortly thereafter the #ii-release cam 5S (Fig. l) releases pin 69h 'on gear 69 connected to the #ii-disk, to thereby permit floating gear 6l to rotate gear 69 (Fig. 1l) sleeve 69a and the #6- disk to thereby restore the typewheel and the accumulator disks.

Just prior, however, to the release'of the #6- disk, as is seen from the diagram of Fig. 30, the trip crank 62 (Fig. 21) releases the trip hammer 104' andthe platen lila forces the duplex tape |28 against the selected letter or figure character to print the same upon the record tape |28a. The trip crank thereupon removes platen Illa from engagement with the tape 'whereupon the #li-disk driven by its sleeve 69a and the gear 69, begins the rotation of the typewheei as explained above in its same direction of rotation |3541 to the right and thereupon cam 6i movesl the pawl to the left to actuate the ratchet wheel i35 to advance the tape.

During this same part of the cycle, cam 59 (Fig. 6) 'actuates cam follower 91 and lever 94 to operate the reset vane 92 to reset the storage tumblers as indicated by reset in Fig. 30 and the start-stop shaft is stoppedshortly thereafter by pin 52 (Fig.'8) engaging with lug Bib on the start-stop trip lever 8l. The #E-disk has meanwhile been restoring the vaccumulator disk, and as is seen from Fig. 30

' this restoration continues even after the startstop shaft has been stopped and subsequently released for rotation on its succeeding cycle and such restoration'continues up to the time that sequence cam 58 again engages storage tumbler 58a in the middle of the first section Ia of the succeeding signal. An overlap is therefore provided so that the operation of the receiver can be started while a translatorior accumulator is being restored to zero position.

Novel means are therefore provided whereby asimple compact receiver for printing telegraphy is provided, wherein the signals are restrained in their effect to their sequential occurrences, wherein restoration of the typewheel and accumulator occurs in the same direction of rotation as during the setting thereof, and wherein an' extremely simple and effective mechanism is provided. I

While there has been shown and described and the invention. as applied to a single modification it will be understood that various omissions and substitutions'and changes in the form and det'ails ofthe device illustrated and in its operation may be made by those skilled in the art without pointed lout the fundamental novel features of of saidadjacent members, and means-for rotating the last of saidmembers.

6. A translator foiiiprinting-telegraphs comprising a shaft, a pair of -rotatable members mounted on said shaft, one of. said members being attached to said shaft, aslot in said member extending angularly about said shaft, a pawl having a portion riding in said slot and another portion interlocking said pair of members, and

means for releasing said other portion from one' of said members.

'7. A translator for printing 'telegraphs comprising a shaft, a plurality of rotatable members mounted on said shaft, including a rst member and a last member, said rst member being attached to said shaft and the remaining departing from the spirit of the invention. It

is the intention, therefore, to be limited only as indicated by the scope of the following claims. What is claimed is: A 1. In a printingtelegraph receiver, a selector device comprising actuating and actuated members, means conditioning said members in response to a sequence of received line current coriditions, and one of said members cooperating members mounted freely on said shaft, a slot 1nA each of said members extending angularly thereof, respectively, in the ratios 1, 2, 4, 8 and with said conditioning means to prevent a change in saidj conditioning by a subsequent condition of said sequence during the conditioning in re" sponse toa preceding condition of said sequence.

v2. In a printing telegraph receiver, a selector device comprising an actuating member and an actuated member, means controlled by line current conditions conditioning one of said members in response to the first in a sequence of said line i current conditions, and one of said members cooperating with the other member to prevent a change in said conditioning by a subsequent'condition of said sequence during the conditioning in response to said rst condition.

3. In a printing telegraph receiver, a selector device comprising an actuating member and an actuated member, means controlled by line current conditions conditioning one of said members in response to a sequence of said line current conditions, one of said members cooperatingwith said conditioning meansto prevent a change in said conditioning by a subsequent condition of said sequence during conditioning by a preceding condition of one type, and both of said members cooperating with each other and Iwith said conand lstop means connected to said last member for locking the same]y against rotation.

5. 'A translator for printing telegraphs comprising a shaft, a plurality of rotatable members mounted on said shaft, the rst of said members being attached to said shaft, slots in certain of said members extending angularly about said Y shaft, pawls having a portion riding in said slots,

respectively, and another portion respectively interlocking adjacent pairs of saidv members,

means for releasing. said other portions from one controlling the rotation of said shaft in accordv members distributed axially of said shaft, means 16, control means respectively riding in each of the slots in each member and interlocking said memberand an adjacent member, means for re leasing said control meansV from each of said members whereby said member is free to rotate withrespect to said adjacent member an amount equal tothe angular extent of its slot, and means cooperating with the control means of said last member'. A"8.,1tftranslator' for printing telegraphs comprising a shaft normally tending to rotate, means locking said shaft against rotation, a plurality of vrotatable selecting elements spaced axially of said shaft, means cooperating with said elements and shaftcontrollingthe amount of rotation of -saidshaft and means responsive to signal current conditions for lreleasing said shaft and selectively, relatively, rotatively positioning said members in` various-combinations in accordance with said signal conditions, said cooperating means transferring the total relative rotation of said members to said shaft.

9. A translator for printing telegraphs comprising a shaft, a continually operating driving member for said shaft, means including a clutch -connecting said shaft and said driving member, f

means for, controlling said clutch, a plurality of rotatable selecting elements spaced axially of V'said shaft and controlling the rotation thereof,

means responsive to line current conditions for rendering said control means effective and selectively, relatively, rotatively positioning said elements in various combinations in accordance with said line current conditions, and means for ance with the cumulative effect of said relative rotations. G

10. A translator for printing telegraphs comprising ashaft,V a continually rotating member,

means including a clutch connecting said member arid shaft, means for normally holding said shaft against rotation, a plurality of selecting locking said members, means selectively rendering said locking means ineffective wherebyv said members assume different angular positions with respect to said shaft, means responsive to line current conditions for releasing said holding means and selectively, rotatively positioning said selecting members in accordance with saidline current conditions. and means controlling the rotation `of said shaft in accordance with the total arithmetical accumulation of said selected angular positions.

1l; In combinatioma shaft, a plurality of disk and having a portion thereof extending into its respective opening, said pawls interlocking respective pairs of said members, and means for tia'ily thereof, pawls for each of 'said openings same direction to produce the rotation thereof to the other selectable, rotatable position.

17. In combination, a shaft, a plurality of selecting elements capable of rotation through a releasing said pawls whereby one of said members of said pair may be rotated with respect to the other thereof an amount equal to the angular extent of its respective circumferential opening.

12. A translator for printing telegraphs comprising a shaft normally tending to-rotate, a plurality of members mounted on said shaft one of said members being attached to said shaft for rotation therewith and the others of said members being freely rotatable thereon, means interlocking said attached member and said freely rotatable members.. means selectively releasing said interlock means and means operative by said release, producing limited relative rotation between successive members.

13. In combination, a plurality of rotatable circular members, openings formed in said members extending circumferentially thereof in different angular amounts, means respectively cooperating with said openings in one member and with the adjacent one of said members for locking said members together, and means for selectively operating said cooperating means whereby relative rotation between adjacent members is produced in accordance with said selection.

14. In combination, a shaft, means-normally tending to rotate said shaft, a plurality of dislr members mounted on said shaft, one of said members being attached thereto, openings formed in said members and extending circumferentially thereof in different angular amounts, l

pawls having a portion thereof extending respectively into an opening in one of said members and locking said member with another of-v said members, and means for selectively releasing said pawls from said one member whereby saidshaft is released for rotation in proportion to the accumulated angular extent of said openings in said selected members.

l5. In a printing telegraph receiver, a shaft, a plurality of rotatable selecting members arranged to occupy either of two rotatably assumed positions and controlling the amount of rotation of said shaft, means retaining saidv members in one of said positions, means responsive to selecting units to selectively release said members from said one position for rotation to said other position whereby said members are selectively rotatively positioned in one of said positions in predetermined combinations by rotation in one direction, means transferring the total relative rotation of said-members to said shaft and means releasingsaid members for rotation in said one direction to return said members to the other of said positions.

16. In combination, a shaft, a plurality of selecting elements rotatable through a substantially complete circular path and each arranged to be held in eitherA of two selectable, rotatable positions separated by apart of a revolution and controlling the rotation of said shaft, means tending normally to rotate said elements, electromagnetic means operative for selectively releasing said elements for rotation in one direction to one of the selectable,. rotatable positions thereof, means transferring the total relative rotation of said elements, to said shaft, and means complete cycleY and each arranged to Yoccupy either of two rotative positions separated by less than a complete cycle and controlling the rotation of said shaft, means tending normally to rotate., said elements in one direction, signal responsive means operative for causing the selective release of said elements to thereby assume one of said rotative positions, means transferring the cumulative relative rotationof said elements to said shaft, and means controlling rotation in the same direction only, to produce assumption of the other position.

18. In combination, a typewheel mounted for rotation, a plurality of selecting elements controlling the rotation of said typewheel and capable of rotation through a complete cycle andv each arranged to occupy either of two rotative positions separated by less than a complete cycle, means tending normally to rotate saidelements in one direction, signal responsive means operative for causing the selective release of said elements to assume one of said rotative positions, and means transferring the cumulative relative rotation of said elements'to said typewheel.

19. In combination, a typewheel mounted for rotation, a plurality of selecting members controlling the rotation of said typewheel and capable of rotation through a complete cycle and each arranged to occupy either of two angularly separated, rotative positions, the accumulated angular separation of the positions of all said members comprising substantially 360 degrees, signal responsive means operative for causing the selective release of said elements to assume one of said rotative positions, and means transferring the cumulative relative rotation of said members to said typewheel.

20. Inl combination, a typewheel, a shaft, means mounting said Wheel for rotation with said shaft, a plurality of selecting members controlling the rotation of said shaft and capable of arated, rotative positions, and signal responsivey means operative for causing the selective release of said elements to assume one of said rotative positions, and means transferring the cumulative relative rotation of said members to said shaft. Y

2l. In combination, a typewheel, means normally locking said typewheel'against rotation and including a` plurality of rotatable selecting members controlling the rotative position of said typewheel and each arranged to occupy either of two rotatable positions.. means responsive to code signals for sequentially releasing said members to assume one of said rotative positions, and means for cumulatively controlling the position of said typewheel in accordance with the sum of the individual rotations of said members.

22. In combination, a typewheel rotatable through varyingA degrees of rotation, means normally locking said typewheelagainst rotation and including control means for said typewheel comprising a plurality of rotatable members, means includingmeans responsive to signals for selectively producing relative rotation between certain of said members, and means for transmitting the cumulative, relative rotation of'said members to" controlling the rotation of said elements in the said typewheel. i

23. In combination, a typewheel movable ythrough varying degrees oi' rotation. control means for regulating the rotation of said typewheel comprising a plurality oi' rotatable members, means normally locking said members,

`means releasing, said members for .relative ro tion between one of said members and eachA of the others of said members, means selectively controlling said releasing means, and means for transferring" the cumulative, relative rotation of said selected members to said typewheel.

24. In combination, a typewheel mounted for ing means, and accumulator means controlling.

the amount of rotation of said shaft. comprising a plurality of rotatable members, selectively,

individually controllable in rotation 'in one direction by said signals, one of said members being connected to said wheel, means for sequentially i conditioning saidmembers whereby said one of lsaid members accumulates the separate rotation 'of all of said members, means for delivering said rotation, means controlling the rotation of said typewheel and including a plurality of rotatable members, means interlocking pairs of said members, means for releasing said interlocking means to produce relative rotation in. varying'degnees between eachof successive paired members, means for selectively operating said releasing means, and means for transferring the cumulative rota- .tion of said selected members to said typewheel.

25. In an accumulator, a pair of disks, a slot in one disk extending circumferentially of said disk, a pair of aligned openings in adjacent faces of said a member extending between said slot and said aligned openings, a resilient element maintaining said member in said pair of openings, and means formed on said member for overcoming said resilient member.

26. In an accumulator, a shaft, a disk mounted of said disk extending circumferentially thereof, a second disk freely mounted on said shaft, aligned elements on adjacent faces oi' said disks, means on said second disk for rotating the same, a member having a` portion in said slot and another portion connecting said aligned elements,

and means on said member for 'disengaging the same from one of said aligned elements.

27. In an accumulator, a shaft, means mounted on said shaft for rotation thereof. and means for controlling said rotation comprising a disk member, a slot in a face of said disk member extending veircumierentially thereof, and means, cooperating with said slot to determine the quantitative rotation of said disk member.

'28. In combination, a start-stop shaft, a typewheel, clutch 1means controllingsaid shaft in response to line signals, means connecting said shaft and wheel, means locking said wheel against'rotation, means for releasing said lock- 'on and connected to said shaft, a slot in one face 30. A translator for printing telegraphs com-v prising a shaft, a plurality of disk shaped members axially disposed along said shaft and mounted thereon, one of said members being attached to said shaft, circumferentially extending openings formed in said disk members, pawl members respectively cooperating with said openings,

resilient means respectively urging said pawls to interlock adjacent pairs of said disks, and means formed on said pawls for overcoming said resilient means.

3l. In combination, a start-stop wheel, clutch means responsive to line signals controlling said shaft, means lconnecting said shaft and said wheel, means locking said wheel .l against rotation, means for releasing said locking means, andvaccumulator means controlling the amount of rotation of said shaft for any release thereof comprising a plurality of rotatable members, selectively and individually controllable in rotation by said signals, means for sequentially conditioning said members whereby one of said members accumulates the separate rotation of all succeeding members, means for delivering said l accumulation tosaid wheel, and means for returning both said'wheel and said accumulator memberstozero position. j

" HARRY J, NrcHois.

shaft, a vtype- 

